JAVASCRIPT

add 1 year to current date javascript

// [SOLVED]  var date  = new Date(year + 1, month, day);

$('#membership_start').on('dp.change', function(e){
   console.log(e.date);

   var year  = new Date(e.date).getFullYear();
   var month = new Date(e.date).getMonth();
   var day   = new Date(e.date).getDate();
   var date  = new Date(year + 1, month, day);
   $('#membership_end').data("DateTimePicker").date(date);
 });

add 1 year to given date in javascript

var d = new Date();
    var year = d.getFullYear();
    var month = d.getMonth();
    var day = d.getDate();
    var c = new Date(year);
    console.log(c);
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add 1 year to current date javascript

// => Wed Dec 31 1969 16:00:02 GMT-0800 (PST)